NTSB CAROL · Event
Event SEA05TA028
Registry · N2898D
FAA Aircraft Registry record.
Make / Model
CHRISTEN INDUSTRIES INC A-1
Seats / Engines
2 seats · 1 engine
ADS-B equipped
Yes — Mode-S A2F2DE
Registrant of record
MERRITT ROBERT L
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's failure to maintain adequate airspeed while maneuvering which resulted in an inadvertent stall and subsequent collision with terrain.
Factual narrative
On December 20, 2004, approximately 1000 mountain standard time, a Christen Industries A-1 airplane, N2898D, impacted terrain following a loss of control while maneuvering about 8 miles north of Terreton, Idaho. The airplane sustained substantial damage, and the commercial pilot and the passenger received serious injuries. The airplane was operated by the Idaho Woolgrowers Association, Boise, Idaho, under contract to the United States Department of Agriculture. The purpose of the public use flight was to hunt coyotes. Visual meteorological conditions prevailed, and a company flight plan was filed. The flight departed from Rexburg Madison County Airport, Rexburg, Idaho, at 0815 for the local area flight. The pilot reported to an NTSB investigator that the airplane was at an altitude of 50 to 100 feet agl. After the gunner shot one of a group of three coyotes and wounded another, he circled the airplane left to line up for another shot at the wounded coyote. The turn was made at 60 knots with three notches of flaps. After completing the left turn, the "aircraft seemed to lose elevator control," the tail pitched up, and the nose went down. The pilot added full power and had just enough time to raise the nose before the airplane hit the ground. The forward section of the lower fuselage was crushed upward. The main landing gear separated, and the right wing separated at the wing root and rotated forward. The purpose of the public use flight was to hunt coyotes. The pilot reported that the airplane was at an altitude of 50 to 100 feet agl. After the gunner shot one of a group of three coyotes and wounded another, he circled the airplane left to line up for another shot at the wounded coyote. The turn was made at 60 knots with three notches of flaps. After completing the left turn, the "aircraft seemed to lose elevator control," the tail pitched up, and the nose went down. The pilot added full power and had just enough time to raise the nose before the airplane hit the ground. The forward section of the lower fuselage was crushed upward. The main landing gear separated, and the right wing separated at the wing root and rotated forward. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2004_SEA05TA028.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (stall, loss of control). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- NASA NTRS 2019 · Conference Paper
Transonic Experimental Observations of Abrupt Wing Stall on an F/A-18E Model (Invited)
A transonic wind tunnel test of an 8% F/A-18E model was conducted in the NASA Langley Research Center (LaRC) 16 ft Transonic Tunnel (16-ft TT) to investigate on-surface flow physics during stall.
- NASA NTRS 2019 · Conference Paper
Transonic Experimental Observations of Abrupt Wing Stall on an F/A-l8E Model
A transonic wind tunnel test of an 8% F/A-18E model was conducted in the NASA Langley Research Center (LaRC) 16 ft Transonic Tunnel (16-ft TT) to investigate on-surface flow physics during stall.
- Semantic Scholar 2016 · Article (Interacción)
Trajectory Recovery System: Angle of Attack Guidance for Inflight Loss of Control
This paper describes the design and development of an ecological display to aid pilots in the recovery of an In-Flight Loss of Control event due to a Stall (ILOC-S).
- NTSB Aircraft Accident Reports 2010 · Accident report
Loss of Control on Approach — Colgan Air Flight 3407
Colgan Air 3407 / Continental Connection (Q400) Buffalo NY, February 12, 2009 — 50 fatalities. Definitive investigation of the Colgan 3407 stall-stick-pusher crash on approach to Buffalo.
- NASA NTRS 2026 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
A Scoping Review of Aviation Loss of Control Inflight Research
Loss of control – inflight (LOC-I) contributes to aircraft accidents at unacceptably high rates. Significant industry efforts and research have aimed to improve LOC-I prevention, detection, and recove…
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